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disadvantages ordinary portland cement

portland pozzolana cement (ppc): advantages and uses ...

the above advantages of portland pozzolana cement have been attributed due to the slow conver­sion of calcium hydroxide ca(oh) 2 in the hydrated cement paste into cementitious product. in one of the recent studies in an ordinary portland cement paste only 20% calcium hydroxide was found after 1 year hydration where as in a similarly hydrated paste containing 30% pozzolana only 8.8% calcium ...

advantages and disadvantages of portland cement - silica ...

disadvantages of ordinary portland cement grade 53 … cement/ gray cement is one of the most important building materials to … know more about various advantages and disadvantages of panel doors before you choose …

ordinary portland cement ( opc )- definition uses and ...

types of ordinary portland cement. the ordinary portland cement (opc) was classified into three grades namely 33 grade 43 grade and 53 grade depending upon the strength of the cement at 28 days when tested as per is 4031- 1988.

hydrophobic cement - civil engineering blog

aug 29 2015· advantages & disadvantages of hydrophobic cement. the advantages of hydrophobic cement are as follows: this cement can be used in the construction of water structures such as dams spillways or other submerged structures. the strength of this cement is same as that of ordinary portland cement after 28 days.

what are the advantages of ppc (portland pozzolana cement …

advantages of ppc in fresh concrete portland pozzolana cement (ppc) has following advantages when concrete is in its fresh state. 1. workability portland pozzolana cement has spherical cement particles and they have higher fineness value. due to the spherical shape concrete move more freely and more fineness of particles allows better filling of the pores.

advantages and disadvantages of concrete

sep 12 2017· advantages of concretedisadvantages of concreteadvantages and disadvantages of concreteinert material acts as a filler and the binding materials. ... concrete made with ordinary portland cement gets integrated in the presence of alkalies sulfates etc. sustained loads develop creep in structures. advertisements.

15+ different types of cement - their definition ...

a number of different types of cement are manufactured by varying the ratio of the material and/or by adding some additional materials. some of the most common cement classifications are: 1. ordinary portland cement. 2. rapid hardening cement 3. ultra-rapid hardening cement.

what are the advantages and disadvantages of cement? - quora

jun 09 2019· regarding the advantages and disadvantages of cement i think the answer from zhengzhou jianxin can help you. advantages of ordinary cement: 1the cement has good plasticity before coagulation and can be poured into various shapes and sizes of com...

what are the disadvantages of cement - answers

oct 24 2009· the difference between ordinary portland cement and composite portland cement are the ingredients used to make the cement. composite portland cement has portland cement mixed with other materials. ...

cement - slideshare

dec 03 2012· it ispowdery bonding material havingadhesive and cohesive properties. chemically it is a finely groundmixture of calcium silicates andaluminates which set to a hard masswhen treated with water. these are calledas hydraulic cements (portland cement)and those setting in air are non hydrauliccements (ordinary lime). 5.

cement types

construction documents often specify a cement type based on the required performance of the concrete or the placement conditions. certain cement manufacturing plants only produce certain types of portland cement. what are the differences in these cement types and how are they tested produced and identified in practice?

portland pozzolana cement (ppc) | the construction civil

portland pozzolana cement (ppc) portland pozzolana cement also commonly known as ppc cement. these types of cement are manufactured by using pozzolanic materials as one of the main ingredient. the percentage of pozzolanic material used in the preparation should be between 10 to 30. if the percentage is exceeded the strength of cement is reduced.

rapid hardening cement | the construction civil

rapid hardening cement. rapid hardening cement as the name indicates these type of cement gains high strength in early days. but the initial and final setting time of rapid hardening cement is same as that of ordinary ppc cement.these cements have about 56% of …

ordinary portland cement

reliance on cement and steel will take time and in the interim there is an urgent need to promote lower co 2 cement replace-ments. cement and co 2 formation cement is a defined chemical entity formed from predetermined ratios of reactants at a fairly precise temperature. ordinary portland cement results from the calcination of limestone and ...

pros & cons of portland pozzolana cement (ppc) over ...

today cement is the most commonly used cementing material in construction. cement is the soul of all modern construction. generally two types of cement are available in market: ordinary portland cement (opc) and portland pozzolana cement (ppc). both cement are used in constructions.however some pros and cons of ppc over opc are listed below.

sulphate resistant cement - composition properties uses ...

disadvantages of sulphate resisting cement. sulphate resisting cement is not suitable where there is danger of chloride attack. this will cause corrosion of rebar. if both chlorides and sulphates are present ordinary portland cement with c3a between 5 & 8 should be used. curing process should be done properly with great care for min of 8-10 days.

environmental disadvantage of portland cement « binq mining

jun 09 2013· environmental attributes of concrete – portland cement association. excerpted from an article in environmental design and construction … life of a project concrete appears to be at a disadvantage since it has a relatively high initial … using fly ash or slag as a replacement for portland cement however is not … »more detailed

why do we need to use tile adhesive to lay tiles what are ...

advantages and disadvantages of tile adhesive vs sand-cement mix. sand-cement. sand cement composes of ordinary portland cement (opc) and sand. opc is used for rendering and masonry while sand is normally river sand which is …

the advantages of portland-limestone cement| concrete ...

aug 12 2014· while ordinary portland cement (opc) may contain up to 5% limestone plc contains between 5% and 15% limestone. how is it made and what’s different about it? a metered proportion of crushed dried limestone is fed to the finish grinding mill along with clinker and gypsum. in almost all cases the limestone used in plc is the same limestone ...

what are the advantages and disadvantages of ordinary ...

the difference between ordinary portland cement and composite portland cement are the ingredients used to make the cement. composite portland cement has portland cement mixed with other materials.

portland pozzolana cement (ppc)-definition properties ...

the portland pozzolana cement is manufactured by mixing ordinary portland cement with 10 to 25 percent of the pozzolanic material. the pozzolanic material may not posses cementitious property but it is a material which essentially contains silicious or aluminous material.

concrete - types advantages & disadvantages

apr 18 2017· concrete: concrete is an ordinary concrete produced with opc ( ordinary portland cement) wet cured and inseminated with liquid or vaporous chemical compound (methyl methacrylate monomer) and ized by gamma radiation or with chemical initiated implies i.e by utilizing thermal catalytic method (adding 3% benzoyl peroxide) to the monomer as a catalyst.

advantages and disadvantages of white cement - blogger

oct 11 2016· advantages and disadvantages of white cement the strength of white cement is lower than that of ordinary portland cement. it is not liable to cause staining because it has low content of soluble alkalis. it is four times costlier than ordinary portland cement. related articles:

engineering seminars: slag cement

dec 18 2010· concrete containing slag cement in excess of 25% replacement dosage generally has noticeably slower set times than ordinary portland cement concrete. time of set is related to the percentage of slag cement used in the mix the temperature of the concrete and the ambient temperature. ... disadvantages of slag cement

ordinary portland cement (opc) & portland pozzolana cement ...

jan 25 2018· ordinary portland & portland pozzolana cement portland pozzolana cement – ppc cement: unlike ordinary portland cement portland pozzolana cement (ppc) is manufactured by combination of pozzolanic materials. pozzolana is an artificial or natural material which has silica in …

what is slag cement.any advantages or disadvantages over ...

i had practically used ppc cement in almost all projects. i didn't find any problem. portland slag cement (psc) portland slag cement (psc) is manufactured by either inter-grinding in the portland cement clinker gypsum & granulated slag or blendin...

ordinary portland cement -constituents properties types ...

ordinary portland cement is one of the most widely used type of cement. types properties constituents manufacture uses and advantages of ordinary portland cement is discussed. in 1824 joseph aspdin gave the name as portland cement as it has similarity in colour and quality found in portland ...

pros & cons of ordinary portland cement (opc) over ...

both ordinary portland cement (opc) and portland pozzolana cement (ppc) are used in constructions. however some pros and cons of opc over ppc are listed below. pros of opc over ppc: 01. initial setting time of opc is faster than ppc so it is recommended in projects where props are to be removed early. 02.

disadvantages of ordinary portland cement grade 53 ...

cement/ gray cement is one of the most important building materials to maintain the quality of a construction. read this article to know all specifications and guidelines of gray cement. ... advantages-artistic and elegant appearance disadvantages-unsuitable for harsh weather conditionsrequire polishing..... aluminum door advantages and ...

rapid hardening cement | properties uses advantages ...

apr 14 2018· shrinkage during curing and hardening of cement is less in of rhc. rhc are good at sulphur resistance. good speed of construction can be achieved as the strength is gained in relatively shorter time. disadvantages. it is expensive than ordinary portland cement. extra rapid hardening cement

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